Already known for their utility belt serving system, YO! Sushi is now testing four-propeller flying "iTrays" with flat tops to carry plates across its restaurants, the company says in a new YouTube video.

They'll be controlled by a nearby waiter with an iPad, and will deliver food at speeds of 25 mph.

A video from The Guardian of the trays in action (watch at the bottom of this post) proves that this might not be such a great idea — most of the food winds up on the street instead of the table. Business Insider's Kevin Smith and William Wei previously tested a similar drone, and found it extremely hard to maneuver.